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Dr. Jonathan Peter Nass, MD

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Specializes in: Adult Gastroenterology

143 Longwater Drive
Norwell, MA 02061

(781) 878-5200

Dr. Jonathan Peter Nass, MD is a gastroenterologist in Weymouth, MA specializing in adult gastroenterology. Dr. Jonathan Peter Nass, MD is affiliated with South Shore Health.

Office Locations

1085 Main Street
Weymouth, MA 02190

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143 Longwater Drive
Norwell, MA 02061

(781) 878-5200

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97 Libbey Parkway
Weymouth, MA 02190

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2012 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	25
diagnostic procedures	122
doctor visit	96
gastrointestinal procedures	122
minimally invasive procedures	122
removal of lesion (e.g. growth)	122

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2013 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	91
diagnostic procedures	235
doctor visit	254
gastrointestinal procedures	416
hospital care	414
inpatient care	414
lab tests	54
minimally invasive procedures	416
preventive care	65
removal of lesion (e.g. growth)	235
ultrasound (sonogram)	36

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	287
Female	371

**Ethnicity**
Non-Hispanic White	586
Black	14
Hispanic	44
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	206
From 75 to 84	138
85 and over	116
Less than 65	198

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	52
Depression	46
Chronic Kidney Disease	36
Asthma	18
Osteoperosis	15
Atrial Fibrilation	21
Heart Failure	35
Chronic Obstructive Pulmonary Disease	33
Diabetes	44
Dementia	20
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2014 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	161
diagnostic procedures	255
doctor visit	459
esophageal dilation	14
gastrointestinal procedures	412
hospital care	350
inpatient care	350
lab tests	160
minimally invasive procedures	412
preventive care	43
removal of lesion (e.g. growth)	255
ultrasound (sonogram)	36

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	286
Female	328

**Ethnicity**
Non-Hispanic White	545
Black	0
Hispanic	43
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	197
From 75 to 84	139
85 and over	93
Less than 65	185

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2014

Hypertension	75
High Cholesterol	71
Stroke	8
Ischemic Heart Disease	42
Depression	48
Chronic Kidney Disease	38
Asthma	20
Osteoperosis	14
Atrial Fibrilation	19
Heart Failure	34
Chronic Obstructive Pulmonary Disease	33
Diabetes	43
Dementia	19
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2015 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	192
diagnostic procedures	361
doctor visit	488
esophageal dilation	24
gastrointestinal procedures	527
hospital care	494
injections	16
inpatient care	494
lab tests	333
minimally invasive procedures	527
preventive care	67
removal of lesion (e.g. growth)	361
ultrasound (sonogram)	27

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	674
Female	804

**Ethnicity**
Non-Hispanic White	1312
Black	30
Hispanic	96
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	490
From 75 to 84	302
85 and over	184
Less than 65	502

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2015

Hypertension	75
High Cholesterol	70
Stroke	8
Ischemic Heart Disease	43
Depression	46
Chronic Kidney Disease	39
Asthma	24
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	30
Chronic Obstructive Pulmonary Disease	30
Diabetes	40
Dementia	14
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2016 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	151
diagnostic procedures	332
doctor visit	525
esophageal dilation	34
gastrointestinal procedures	467
hospital care	427
inpatient care	427
lab tests	231
minimally invasive procedures	467
preventive care	48
removal of lesion (e.g. growth)	332
ultrasound (sonogram)	24

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	331
Female	415

**Ethnicity**
Non-Hispanic White	661
Black	0
Hispanic	56
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	157
85 and over	93
Less than 65	256

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2016

Hypertension	75
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	42
Depression	47
Chronic Kidney Disease	46
Asthma	37
Osteoperosis	13
Atrial Fibrilation	16
Heart Failure	31
Chronic Obstructive Pulmonary Disease	31
Diabetes	43
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	162
diagnostic procedures	396
doctor visit	574
esophageal dilation	27
gastrointestinal procedures	564
hospital care	320
injections	12
inpatient care	320
lab tests	327
minimally invasive procedures	564
preventive care	79
removal of lesion (e.g. growth)	396
ultrasound (sonogram)	24

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	352
Female	430

**Ethnicity**
Non-Hispanic White	675
Black	18
Hispanic	56
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	271
From 75 to 84	150
85 and over	88
Less than 65	273

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2017

Hypertension	75
High Cholesterol	64
Stroke	7
Ischemic Heart Disease	41
Depression	46
Chronic Kidney Disease	42
Asthma	17
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	27
Chronic Obstructive Pulmonary Disease	29
Diabetes	44
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2018 were minimally invasive procedures, gastrointestinal procedures, lab tests and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	176
diagnostic procedures	421
doctor visit	611
esophageal dilation	34
gastrointestinal procedures	599
hospital care	351
injections	11
inpatient care	351
lab tests	425
minimally invasive procedures	599
preventive care	99
removal of lesion (e.g. growth)	421
ultrasound (sonogram)	29

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	388
Female	443

**Ethnicity**
Non-Hispanic White	701
Black	0
Hispanic	76
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	281
From 75 to 84	198
85 and over	88
Less than 65	264

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2018

Hypertension	75
High Cholesterol	74
Stroke	6
Ischemic Heart Disease	42
Depression	47
Chronic Kidney Disease	46
Asthma	17
Osteoperosis	13
Atrial Fibrilation	18
Heart Failure	28
Chronic Obstructive Pulmonary Disease	31
Diabetes	42
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	127
diagnostic procedures	357
doctor visit	486
esophageal dilation	28
gastrointestinal procedures	475
hospital care	355
inpatient care	355
lab tests	312
minimally invasive procedures	475
preventive care	60
removal of lesion (e.g. growth)	357
ultrasound (sonogram)	22

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	316
Female	426

**Ethnicity**
Non-Hispanic White	634
Black	15
Hispanic	70
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	259
From 75 to 84	167
85 and over	80
Less than 65	236

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2019

Hypertension	75
High Cholesterol	73
Stroke	8
Ischemic Heart Disease	39
Depression	45
Chronic Kidney Disease	45
Asthma	16
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	27
Chronic Obstructive Pulmonary Disease	28
Diabetes	46
Dementia	17
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2020 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	12
diagnostic procedures	175
doctor visit	224
gastrointestinal procedures	244
hospital care	308
inpatient care	308
minimally invasive procedures	244
preventive care	44
removal of lesion (e.g. growth)	175

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	160
Female	214

**Ethnicity**
Non-Hispanic White	352
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	172
From 75 to 84	94
85 and over	45
Less than 65	63

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2020

Hypertension	65
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	35
Depression	37
Chronic Kidney Disease	41
Asthma	13
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	26
Chronic Obstructive Pulmonary Disease	19
Diabetes	27
Dementia	16
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2021 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

diagnostic procedures	302
doctor visit	240
esophageal dilation	12
gastrointestinal procedures	393
hospital care	335
inpatient care	335
minimally invasive procedures	393
preventive care	68
removal of lesion (e.g. growth)	302

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	230
Female	287

**Ethnicity**
Non-Hispanic White	486
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	157
85 and over	58
Less than 65	62

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2021

Hypertension	68
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	37
Depression	34
Chronic Kidney Disease	38
Asthma	9
Osteoperosis	14
Atrial Fibrilation	17
Heart Failure	28
Chronic Obstructive Pulmonary Disease	20
Diabetes	23
Dementia	14
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2022 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	18
diagnostic procedures	248
doctor visit	135
gastrointestinal procedures	336
hospital care	250
inpatient care	250
minimally invasive procedures	336
preventive care	53
removal of lesion (e.g. growth)	248

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	197
Female	229

**Ethnicity**
Non-Hispanic White	397
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	197
From 75 to 84	136
85 and over	49
Less than 65	44

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2022

Hypertension	74
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	29
Depression	29
Chronic Kidney Disease	31
Asthma	12
Osteoperosis	18
Atrial Fibrilation	23
Heart Failure	24
Chronic Obstructive Pulmonary Disease	23
Diabetes	24
Dementia	10
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2023 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	22
diagnostic procedures	265
doctor visit	123
esophageal dilation	20
gastrointestinal procedures	348
hospital care	285
inpatient care	285
minimally invasive procedures	348
preventive care	53
removal of lesion (e.g. growth)	265

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	197
Female	242

**Ethnicity**
Non-Hispanic White	407
Black	0
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	191
From 75 to 84	152
85 and over	53
Less than 65	43

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2023

Hypertension	74
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	31
Depression	31
Chronic Kidney Disease	29
Asthma	14
Osteoperosis	15
Atrial Fibrilation	26
Heart Failure	24
Chronic Obstructive Pulmonary Disease	25
Diabetes	29
Dementia	10
Cancer	21

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA during 2024 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

blood draw	13
diagnostic procedures	265
doctor visit	94
esophageal dilation	13
gastrointestinal procedures	327
hospital care	208
inpatient care	208
minimally invasive procedures	327
preventive care	47
removal of lesion (e.g. growth)	265

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Male	187
Female	220

**Ethnicity**
Non-Hispanic White	380
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	193
From 75 to 84	118
85 and over	53
Less than 65	43

Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD in 2024

Hypertension	73
High Cholesterol	74
Stroke	12
Ischemic Heart Disease	28
Depression	29
Chronic Kidney Disease	29
Asthma	12
Osteoperosis	17
Atrial Fibrilation	22
Heart Failure	23
Chronic Obstructive Pulmonary Disease	26
Diabetes	25
Dementia	11
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Jonathan Peter Nass, MD for Medicare patients.

The highest averages for the top procedures that Dr. Jonathan Peter Nass, MD treated as a gastroenterologist in Weymouth, MA were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

blood draw	95
diagnostic procedures	287
doctor visit	331
esophageal dilation	22
gastrointestinal procedures	402
hospital care	341
injections	13
inpatient care	341
lab tests	263
minimally invasive procedures	402
preventive care	60
removal of lesion (e.g. growth)	287
ultrasound (sonogram)	28

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Jonathan Peter Nass, MD.

**Gender**
Female	339
Male	277

**Ethnicity**
Black / African American	5
Asian / Pacific Islander	0
Non-Hispanic White	548
Native American / Alaskan Native	0
Hispanic	33
Other	9

**Age**
85 and over	76
75 to 84	146
Less than 65	166
65 to 74	225

Average of Total of Conditions of Medicare patients treated by Dr. Jonathan Peter Nass, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Jonathan Peter Nass, MD treated were hypertension, high cholesterol, depression and chronic kidney disease.

Hypertension	67
High Cholesterol	64
Stroke	7
Ischemic Heart Disease	35
Depression	37
Chronic Kidney Disease	35
Asthma	16
Osteoporosis	12
Heart Failure	25
Chronic Obstructive Pulmonary Disease	25
Diabetes	33
Atrial Fibrillation	17
Cancer	14
Dementia	14

Education & Training

He completed residency at Rhode Island Hospital. He is certified by the Board Certification: Gastroenterology and has a state license in Louisiana.

Residency: Rhode Island Hospital

Board Certification: Board Certification: Gastroenterology

Licensed In: Louisiana

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General Payments

These charts describe general payments received by Dr. Jonathan Peter Nass, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
AbbVie, Inc.	$1,393 Humira $775	Creon $262	Mavyret $179	Viekira $69	Technivie $37	Other $71
Takeda Pharmaceuticals America, Inc.	$331 AMITIZA $149	ENTYVIO $145	Dexilant $37
Takeda Pharmaceuticals U.S.A., Inc.	$286 MOTEGRITY $106	ENTYVIO $83	AMITIZA $67	Dexilant $13	$17
Valeant Pharmaceuticals North America LLC	$285 XIFAXAN $132	Uceris $116	UCERIS TABLETS $23	XIFAXAN - 550 MG $15
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$269 XIFAXAN $206	Uceris $17	Trulance $16	RELISTOR ORAL $16	Relistor $15
Other	$2,032 LINZESS $149	Cimzia $142	REMICADE $141	SIMPONI $127	Uceris $127	Other $1,347

**Types of Payments**
Food and Beverage	$4,597

Biography

Dr. Jonathan Nass is an adult gastroenterology specialist in Norwell, MA, South Weymouth, MA, and Weymouth, MA. He is affiliated with South Shore Health. Dr. Nass's residency was performed at Rhode Island Hospital.